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3 years ago

Can someone help me plz

Mathematics

1 answer:

Lina20 [59]3 years ago

5 0

Answer:

second person

Step-by-step explanation:

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|0.7x+5|>6.7<br><br>Help plz

Pavlova-9 [17]

Answer:

$\large\boxed{x\dfrac{17}{7}}\\\downarrow\\\boxed{x\in\left(-\infty,\ -\dfrac{117}{7}\right)\ \cup\ \left(\dfrac{17}{7};\ \infty\right)}$

Step-by-step explanation:

$|0.7x+5|>6.7\iff0.7x+5>6.7\ or\ 0.7x+56.7\qquad\text{subtract 5 from both sides}\\0.7x>1.7\qquad\text{divide both sides by 0.7}\\x>\dfrac{1.7}{0.7}\to x>\dfrac{17}{7}\\\\(2)\\0.7x+5$

5 0

2 years ago

A rectangle has a perimeter of 54 cm. It has a length of 15 cm. What is its area? *

d1i1m1o1n [39]

the area is 180 cm. to find the perimeter you would do 15+15+14+14 to get 54 cm. So for area you do (l×w) which is 15×14=180.

5 0

2 years ago

A scuba diver is 23 feet below sea level.A second diver is 7 feet closer to the surface. What integer represents the second scub

NeTakaya

Answer:

The integer is -16

Step-by-step explanation:

The first scuba diver is 23 feet below sea level. THe second is 7 feet closer.

23 - 7 = 16. He is still under sea level, so it would be -16

6 0

3 years ago

Patrick is keeping track of how far he jogs each morning.

katrin2010 [14]

Answer:

21:50

Step-by-step explanation:

We need to find the ratio of 420 m to 1 km.

We know that,

1 km = 1000 m

So,

The ratio becomes,

$\dfrac{420\ m}{1\ km}=\dfrac{420\ m}{1000\ m}\\\\=\dfrac{42\ m}{100\ m}\\\\=\dfrac{21}{50}$

So, the required ratio is 21:50.

5 0

3 years ago

If m∠A =91° and m∠B = 40°, find m∠1.

marusya05 [52]

Answer:

m∠1 is calculated as 49°.

Step-by-step explanation:

Consider the angles are the interior angles of a triangle.

m∠A =91°

m∠B = 40°

m∠1 = ?

We know that the sum of interior angles of a triangle is 180°. So,

m∠A + m∠B + m∠1 = 180°

or, m∠1 = 180°- m∠A - m∠B

or, m∠1 = 180°- 91° - 40°

or, m∠1 = 49°

Hence, m∠1 = 49°.

7 0

3 years ago